CN101127554B - Relay station, radio base station and communication method - Google Patents
Relay station, radio base station and communication method Download PDFInfo
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- CN101127554B CN101127554B CN2007101281464A CN200710128146A CN101127554B CN 101127554 B CN101127554 B CN 101127554B CN 2007101281464 A CN2007101281464 A CN 2007101281464A CN 200710128146 A CN200710128146 A CN 200710128146A CN 101127554 B CN101127554 B CN 101127554B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15542—Selecting at relay station its transmit and receive resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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Abstract
In a radio communication system such as one complying with TEEE802.16j, a relay station (3) is provided with a control unit (42) to control a transmission processing device (38-41) and a reception processing device (32-34) to eliminate overlap between a receiving period of radio signals from a base station (2) and a transmission period of radio signals to a radio terminal (4). The transmission processing device (38-41) and reception processing device (32-34) are further controlled to avoid overlap between a transmission period of radio signals to the base station (2) and a reception period of signals from the radio terminal (4).
Description
Technical field
The communication means that the present invention relates to relay station, radio base station and be used between these stations, utilizing radio communication.The present invention is applicable to based on the radio communications system that for example in IEEE802.16, specifies and adds relay station.
Background technology
Radio communications system (is the system of representative with WCDMA and CDMA 2000 etc.) through radio communication path realization communication is just promoted in worldwide at present.In this radio communications system, to a plurality of service areas a plurality of radio base stations are set, a radio terminal communicates through arbitrary radio base station and other communicators (communication terminal) then.In addition, in this system, overlap mutually by the base station service area that forms and another service area that forms by adjacent base station.Even therefore the radio environment variation of communication also can keep communication through the handing-over processing.
In addition, as radio system, adopted the for example technology of code division multiplexing, time division multiplexing, frequency division multiplexing and OFDM (OFDMA) etc., thereby a plurality of radio terminal can be connected to a radio base station simultaneously.
Yet radio terminal is arranged in the service area zone in addition that radio base station can carry out radio communication sometimes.In the case, radio terminal can not receive radio signals thereby can not receive service from radio base station.Therefore, a kind of like this system has been proposed, wherein, in said deployed in areas be used for the relay station that carries out radio communication with radio base station and radio terminal, thereby radio base station can carry out radio communication through relay station.
Specifically, the 802.16j task groups is being discussed now and is being introduced this relay station (RS).
For example, the item relevant with IEEE 802.16 disclosed in IEEE Std802.16TM-2004 and IEEE Std802.16eTM-2005.
Summary of the invention
According to the above-mentioned background technology; Radio terminal can carry out radio communication through relay station and radio base station; But, therefore must discussion how to realize each radio communication owing to require relay station not only to carry out radio communication with radio terminal but also with radio base station.
Therefore, the objective of the invention is to requirement coordinates the radio communication between the radio communication between relay station and the radio base station and relay station and the radio terminal.
Another object of the present invention is to improve the utilization ratio of radio channel.
In addition, a purpose more of the present invention is still can not pass through any advantage that prior art obtains by what the arbitrary execution mode in following a plurality of execution modes produced.
The present invention uses a kind of relay station that comprises control unit; This control unit is controlled with receiving and processing device sending processing unit, first receives the period and overlaps mutually with first transmit time segments that is used for the radio terminal transmission radio signal under the control that is in said relay station not allow to be used for from what radio base station received radio signals.
Preferably, said first transmit time segments overlaps mutually with second transmit time segments that is used for from the radio terminal transmission radio signal of said radio base station under the control that is in said radio base station.
Preferably, said control unit is controlled said transmission processing unit and said receiving and processing device, to be provided at said first transmit time segments the 3rd transmit time segments to said radio base station transmission radio signal afterwards.
Preferably, receive the radio signal that receives in the period and in the radio signal that said first transmit time segments sends, comprise targeting signal said first.
The present invention uses a kind of relay station that comprises control unit; This control unit is controlled receiving and processing device and transmission processing unit, overlaps mutually with the first reception period that is used for from radio terminal receives radio signals with first transmit time segments that does not allow to be used for to radio base station transmission radio signal.
Preferably, said first receive period and said radio base station and overlap mutually from the second reception period that the radio terminal under the control that is in said radio base station receives radio signals.
Preferably, said control unit is controlled said transmission processing unit and said receiving and processing device, is connected on said first and receives being used for from what said radio base station received radio signals after period and the 3rd receive the period to provide.
The present invention uses a kind of radio communications system, and this radio communications system comprises: have the radio base station of control unit, this control unit was controlled the reception period that is used to send the transmit time segments of radio signal and be used to receive radio signals; With relay station with control unit; This control unit is regularly controlled through the transmission of the targeting signal that the control radio base station down that is based in the said transmit time segments shift time that sends from said radio base station and targeting signal subtend and is in this relay station sends, with the control that is in this relay station under period of communicating by letter of radio terminal in do not carry out with the corresponding reception processing of said transmit time segments and with the corresponding transmission processing of said reception period.
Preferably, send said shift time from said radio base station to said relay station.
Description of drawings
Fig. 1 is the exemplary illustration to radio communications system.
Fig. 2 is the exemplary illustration to radio base station 2.
Fig. 3 is the exemplary illustration to relay station 3.
Fig. 4 is the exemplary illustration to radio terminal 4.
Fig. 5 is the exemplary illustration to radio frame form 1.
Fig. 6 is the exemplary illustration to radio frame form 2.
Fig. 7 is to sending and receive exemplary illustration regularly.
Fig. 8 is the exemplary illustration to regularly regulating 1.
Fig. 9 is the exemplary illustration to regularly regulating 2.
Figure 10 is the exemplary illustration to regularly regulating 3.
Figure 11 is the exemplary illustration to regularly regulating 4.
Figure 12 is the exemplary illustration to transmission of the message between BS and the RS and receiving sequence.
Embodiment
Below will describe preferred implementation of the present invention.
[a] first execution mode
Being used for carrying out the radio communication equipment (relay station, radio terminal) of radio communication with radio base station need be synchronous with the radio frame that sends from radio base station.Therefore, each radio base station all sends and is used for the signal synchronous with radio frame (synchronizing signal).Can this synchronizing signal be set at targeting signals different in each radio base station; And radio communication equipment is stored polytype targeting signal pattern in advance; So the radio base station that it can select to have the first water pattern (for example, the highest reception level) in a plurality of patterns of being stored is as communication parter.
When for example using OFDM (OFDMA) as radio system, radio base station will send data allocations and send for each subcarrier to utilize a plurality of subcarriers.In this case, radio base station can be through sending leading each subcarrier of distributing to leading with preassigned pattern.Radio terminal and such radio base station are synchronous then, that is, this radio terminal receives leading (optimal coupling condition) with first water from this radio base station.
In addition, radio base station is that benchmark sends the signal that adopts frame format with the synchronizing signal.Radio communication equipment is set up frame synchronization through utilizing synchronizing signal, and is that the benchmark map information that receives data is (in order to the data that the transmission or the reception of radio communication equipment are controlled: the MAP data) with the synchronizing signal.For example, with the MAP data allocations in being right after after synchronizing signal.
Allow the MAP data to comprise to be used for data map to the timing of physical channel (downlink channel (channel) and uplink channel (channel)), channel information etc. from the radio communication equipment side to the radio base station side from the radio base station side to the radio communication equipment side.In addition, radio frame has the form corresponding to the MAP data.In addition, come the specific radio electrical communication equipment, can physical channel be specified to each radio communication equipment through the identification information that utilizes radio communication equipment.Certainly under the situation of not concrete specific radio electrical communication equipment, map information sent to a plurality of wireless devices (all radio communication equipments in the service area that for example, forms) by radio base station.
Therefore, can use through will receive (transmission) receive (transmissions) regularly with reception (transmission) channel required parameters such as (reception (transmission) sub-channel mode information) data that form example of including as the MAP data.
The radio terminal that is positioned at the service area of radio base station directly receives synchronizing signal to set up synchronously from this radio base station (rather than passing through relay station).Radio terminal directly is that benchmark receives the MAP data with the synchronizing signal, also receives radio signals by receiving regularly through the receive channel by this MAP data appointment, and regularly sends radio signal through the transmitting channel by this MAP data appointment by sending.Therefore, directly (rather than passing through relay station) carries out radio communication with radio base station.
On the other hand, relay station also receives synchronizing signal and sets up synchronous from radio base station.With this synchronizing signal is benchmark, and relay station receives the MAP data and regularly (through the MMR link) carries out radio communication with radio base station with receiving regularly by the transmission by this MAP data appointment.
When radio terminal was positioned at the service area of relay station, although beyond the service area of radio base station, relay station also can receive data, because the data that will be addressed to radio terminal through the MMR link send to relay station.Relay station is by using the MAP data notification to send leading and MAP data and data to radio terminal for the timing of radio terminal.In the same way; Through utilizing these MAP data the transmission of uplink data is regularly notified to radio terminal; And receive the user data that sends from radio terminal etc. according to this notice, through the MMR link this user data is sent to radio base station 2 according to the MAP data of sending then from radio base station.Owing to use the MMR link as the communication link between radio base station and the relay station, so radio terminal need not receive the signal that sends through the MMR link.
That kind as described above, relay station need carry out radio communication with radio base station and the radio terminal that is under the control of relay station.
Here; Equal or approach carrying out between relay station and the radio terminal under the situation of the employed frequency of radio communication carrying out the employed frequency of radio communication between relay station and the radio base station; In some cases; When radio base station receives radio signals because the diffusion of the transmission signal of the radio terminal under from relay station to the control that is in relay station, relay station may not receive normal radio signal from radio base station.In addition; When the radio terminal of relay station under being in its control receives radio signals; It may not normally receive radio signals from the radio terminal that is under its control, because the transmission signal from the relay station to the radio base station can be diffused into receiving and processing equipment.
Therefore, field offset when making relay station from reception that radio base station receives radio signals is not to overlap mutually to the transmit time segments that radio terminal sends radio signal with relay station.
In addition, make relay station send the transmit time segments skew of radio signal, not overlap mutually from the reception period that radio terminal receives radio signals with relay station to radio base station.
Next, will describe the rapport between the radio communication between the radio communication between relay station and the radio base station and relay station and the radio terminal with reference to accompanying drawing.
Below will describe with reference to the detailed structure and the operation of accompanying drawing to each unit.
Fig. 1 shows the structure of the radio communications system of first execution mode.In Fig. 1, label 1 expression routing device; 2 expression radio base stations (BS); 3 expression relay stations (RS); 4 expression radio terminals (T).As radio terminal 4, can use the wireless device that is suitable for moving the so-called MS (mobile radio station) of purposes or is suitable for static purposes.
At this; Radio terminal 4 can carry out radio communication with radio base station 2 direct (rather than passing through relay station) in the service area of radio base station 2, but also can in the service area of relay station 3, carry out radio communication through relay station 3 and radio base station 2.(in the zone in the service area of radio base station 2 or beyond its service area) can be provided with one or more relay station 3 and carry out radio communication with radio terminal 4 in guaranteeing the zone that communicates with radio base station 2.Yet; Under the illustrative in the figure situation; Radio terminal 4-1 can be directly and radio base station 2-1 carry out radio communication, but radio terminal 4-2 can not be directly and radio base station 2-1 carry out radio communication but communicate through relay station 3-1 and radio base station 2-1.
Under the situation in the service area that relay station 3 is arranged on radio base station 2; The directivity of the antenna that expectation is used for communicating with radio terminal 4-2 is taken as the direction (direction of radio terminal 4-2) beyond the service area of radio base station 2, to communicate with radio terminal 4 beyond the service area of radio base station 2.
In addition, relay station 3 is arranged in the service area zone in addition of radio base station 2, requires still to keep the MMR link.For example; Even relay station 3 is arranged in the service area zone in addition of radio base station 2; Also can be controlled to greater than the transmitted power of other signals and form the necessary signal of MMR beyond the service area through forming the necessary signal transmitting power of MMR so that can be sent in; Perhaps through (having more highly sensitive receiving and processing device through utilization; Provide to have the more antenna of high-gain, or utilize sky alignment radio base station 2 to send wave beams with fabulous directivity) improve the receiving sensitivity of relay station 3, keep the MMR link.
Next, with reference to Fig. 2 the structure of radio base station 2 is explained in more detail.
Fig. 2 is the figure that the structure of radio base station 2 is shown.
In Fig. 2, label 10 expression is used for the antenna that sends and receive radio signals with relay station 3 and radio terminal 4; 11 are illustrated in the duplexer that uses antenna 10 in transmission and the receiving system publicly; 12 expression receiving elements; 13 expressions are used for carrying out receiving radio signals the demodulating unit of demodulation; 14 expressions are used for decoding unit that the reception signal after the demodulation is decoded; 15 expression control data extraction units, it is used for extracting control data giving timing control unit 20 with this control data from decoded data, and will send packet generating part 16 to such as other data of user data etc.; 16 expression packet generating part, it is used for sending the data that send from the control data extraction unit to the NW interface unit as grouped data.
Label 17 expressions are formed into the interface unit of the interface (carrying out packet communication at this) of routing device 1; 18 expression packet identification unit; It is used for the IP address that comprises in the grouped data that receives from NW interface unit 17 is discerned; (for example confirm based on this IP address date as the radio terminal of communication parter; Obtain the ID of corresponding radio terminal 4 through IP address date and the corresponding relation between the ID of storage radio terminal 4); Obtain QOS, send request through giving MAP information generating unit 21, and will store buffering of packets unit 19 into from the grouped data that NW interface unit 17 sends to bandwidth assignment with this ID, QOS information with this ID corresponding (storing accordingly) with this ID.
Label 20 expression timing control units, its generation is used for time-controlled control signal is carried out in the radio communication between relay station 3 and the radio terminal 4 (4-2).That is, timing control unit 20 sends timing controling signal through generating timing controling signal and this timing controling signal being imposed on MAP information generating unit 21 via MMR chain road direction relay station 3-1.
Label 21 expression MAP information generating unit, it confirms and the corresponding map section of QOS as keyword (key) through the ID that uses radio terminal 4, and indication PDU generation unit 22 forms frame format according to this map section.In the case, MAP information generating unit 21 reads the data of treating 19 transmissions from the buffering of packets unit and sends these data to PDU generation unit 22 together with the MAP data.
Where 21 pairs of radio base stations 4 of MAP information generating unit manages and stores if being positioned at.Be present under the situation in the service area of radio base station at radio base station (for example T 4-1), this radio terminal 4 of MAP information generating unit storage is arranged in the information of the service area of radio base station.And be located at radio terminal 4 (for example T 4-2) under the situation under the control of relay station, this radio terminal of MAP information generating unit storage is present in the information in the service area of relay station (RS 3-1).When radio terminal 4 was positioned at the service area of base station, MAP information generating unit 21 generated the MAP data that are used to directly send.When radio terminal 4 is arranged in following time of control (at the service area of relay station) of relay station, MAP information generating unit 21 generates the MAP data that are used for sending to through the data that the MMR link will be addressed to radio terminal 4 relay station.
Label 22 expression PDU generation units, it generates PDU so that to store into synchronizing signal (leading) be in each district of the radio frame that forms of benchmark with sending data etc. with the MAP data, and this PDU is sent to coding unit 23.Label 23 presentation code unit 23; 24 expression modulating units; 25 expression transmitting elements.After having carried out, the PDU data are modulated, and the PDU data after will modulating through antenna 10 send from transmitting element 25 as radio signal such as the encoding process of error correction coding.
Label 26 expression control units, it is through controlling the transmission of radio base station 2 to MAP information generating unit 21, transmission processing unit and receiving and processing device etc. respectively and receiving regularly.
Fig. 3 is the figure that the structure of relay station 3 is shown.
In Fig. 3, label 30 expression is used for the antenna that sends and receive radio signals with radio base station 2 and radio terminal 4 (for example T 4-2); 31 expressions are used for antenna 10 is used to the duplexer that sends and receive publicly; 32 expression receiving elements; 33 expressions are used for received signal is carried out the demodulating unit of demodulation; 34 expressions are used for decoding unit that the reception signal after the demodulation is decoded; 35 expression control data extraction units; It is used for extracting (receiving from radio base station 2) MAP data and giving MAP information analysis unit 36 with these MAP data from decoded data, and is used for sending the data that are addressed to radio terminal 4 that receive from radio base station 2 to PDU unit 38.Receiving from radio terminal 4 under the situation of radio signal, also will receive data and be sent to PDU buffer cell 38 to send it to radio base station 2.
Fig. 4 is the figure that the structure of radio terminal 4 is shown.
In Fig. 4, label 50 expression is used for the antenna that sends and receive radio signals with relay station 3 and radio base station; 51 expressions are used to the duplexer that sends and receive with antenna 50 publicly; 52 expression receiving elements; 53 expressions are used for received signal is carried out the demodulating unit of demodulation; 54 expressions are used for decoding unit that the reception signal after the demodulation is decoded; 55 expression control data extraction units, it is used for extracting control data from decoded data, when detecting the MAP data, is applied to MAP information analysis unit 56, and sends other data (user data) to data processing unit 57.
The 56 pairs of MAP data that receive from relay station 3 (or radio base station) in MAP information analysis unit make an explanation; To the transmission that is used for communicating with receive regularly and transmission and receive channel detect, and this testing result is imposed on control unit 62 with relay station 3 (or radio base station).
In addition, then will be from the user data input PDU buffer cell 58 of giving communication partner appliance to be sent of data processing unit 57.
Transmitting element 61 sends radio signal through antenna 50.
Next, below will provide the embodiment of radio frame form and the communication sequence in the system of above explanation is elaborated.At this, will consider to meet the radio frame form of IEEE Std802.16d, e as embodiment, but the present invention is not limited to this.
Fig. 5 shows the embodiment of the frame format of the radio signal of between radio base station, relay station and radio terminal, sending and receiving.BS2-1, T4-1, RS3-1 and T4-2 are in deployment relation shown in Figure 1 down.
In Fig. 5, Tx, Rx represent respectively to send and receive.Therefore, radio base station 2 at first sends leading (P) as front end region, then is the order of DL/UL MAP, MMR data is sent.Employing is used to make radio terminal 4-1 and relay station 3-1 to form leading with radio base station 2 synchronous known mode to be sent.When using OFDM (OFDMA), send the signal of preassigned pattern through each subchannel.
To after the leading transmission being DL/UL MAP, it is used for sending to relay station 3-1 and radio terminal 4-1 the zone of the control data (MAP data) of transmission/reception timing and transmission/receive channel for storage.Which for example, in this district, include: use downlink channel regularly and transmitting channel, be used for the MAP data (information of the mapping method that expression is used to send or receive) of carrying out timing that data send (T4-1) and channel information and should use the information of timing and channel transmission data (MMR1, T4-1) as expression through uplink channel to radio terminal 4-1 to the transmission of relay station, the MMR data of sending as the MMR link from radio base station.
Therefore; Each relay station 3 and radio terminal 4-1 are regularly synchronous through directly receive the next frame with radio base station 2 of leading P from radio base station 2, and through regularly being benchmark reception DL/UL MAP with this frame and confirming that the timing and the channel that are used to send and receive use respective channels to send and receive by the timing execution of correspondence.
In the embodiment of Fig. 5, radio terminal 4-1 is synchronous according to the leading and radio base station 2 that sends from radio base station 2, and DL/UL MAP is analyzed.Thus, it recognizes that these data are in specified timing (T4-1) and channel, to send, so it is operated to receive this data (T4-1).
In addition, RS3-1 analyzes with reception DL/UL MAP and includes the MMR of message to the station of oneself.This MMR comprises the data (is the data of the T4-2 of giving to be sent at this) of the radio terminal 4-2 of giving to be sent.
Simultaneously, the same with radio base station 2, relay station 3-1 sequentially sends the DL/UL MAP that begins from leading (P) as front end region of frame.This is leading be used to make radio terminal 4-2 can with relay station 3-1 synchronously and the predetermined known mode of sending.When using OFDM (OFDMA), send the signal of preassigned pattern through each subchannel.
Use the data among the radio terminal 4-2 by MAP data channel appointed and timed sending T4-2.
Radio terminal 4-2 is synchronous through receiving from the leading and relay station 3-1 of relay station 3-1 transmission, and DL/UL MAP is analyzed.Thus, it recognize these data by this DL/UL MAP channel appointed and regularly (T4-2) send, so it is operated to receive these data (T4-2).
In addition, radio terminal 4-2 sends RNG (distance measuring signal), CQI (reception quality information) and data (user data etc.) in the timing that is allowed to send by UL MAP.
RNG representes as known signal from the distance measuring signal of radio terminal 4 with relay station 3-1 transmission.In the receiving and processing device of relay station that directly receives distance measuring signal 3 and radio base station 2; Obtain the increase of the deviation that receives deviation (phase shift) regularly, receive frequency and required transmitted power/reduce information, and with these information as regulating the transmission source that report information is given this distance measuring signal.Relay station 3-1 sends it to radio base station 2 through the MMR link then by from the MAP data channel appointed of relay station 3-1 and the RNG signal that regularly receives from radio terminal 4-2.In addition, CQI is the signal that is used to report to such as the measurement result of the quality of reception of the known signal of leading grade, and is waited the UL MAP from radio base station 2 and relay station 3-1 respectively and limit it and send regularly and transmitting channel.The transmission route of this signal is similar to the transmission route of RNG signal.Relay station 3-1 sends to radio base station 2 through the MMR link with received RNG (distance measuring signal), CQI (reception quality information) and data (user data etc.).
In the frame format embodiment of above explanation, depart to the transmit time segments that radio terminal 4 sends radio signal from reception period and the relay station 3 that radio base station 2 receives radio signals through making relay station 3, make them non-intersect folded.In addition, depart from from the reception period that radio terminal 4 receives radio signals, make their non-intersect folding through making relay station 3 sends transmit time segments from radio signals to radio base station 2 and relay station 3.
In addition, non-intersect folded ground distributes following the period successively on time shaft: radio base station 2 send the transmit time segments (BS transmit time segments), relay station 3-1 of radio signals to the transmit time segments (RST transmit time segments) of radio terminal 4 (comprising 4-2) transmission radio signal, relay station 3-1 from reception period (BS receives the period) that reception period (RST receives the period) that radio terminal 4 (comprising 4-2) receives radio signals and radio base station 2 receive radio signals.
Therefore; Relay station 3 can prevent: the transmission signal at the radio terminal 4 under from relay station 3 to the control that is in relay station 3 when radio base station 2 receives radio signals is diffused into the receiving and processing device, thereby relay station 3 can't normally receive the radio signal from radio base station 2.In addition; Relay station 3 can also prevent: 2 transmission signal is diffused into the receiving and processing equipment from relay station 3 to radio base station when the radio terminal 4 under being in its control receives radio signals, thereby relay station can't normally receive from the radio signal that is in the radio terminal 4 under its control.
Note, control sending and receive adjusting regularly by the control unit in each equipment 26,42 and 62.
Next, with another embodiment that provides the radio frame form.
Fig. 6 is the figure of embodiment that is illustrated between radio base station, relay station and the radio terminal frame format of the radio signal of sending and receiving.
Even in this embodiment, also, make them non-intersect folded through relay station 3 is departed to the transmit time segments that radio terminal 4 sends radio signal from reception period and the relay station 3 that radio base station 2 receives radio signals.In addition, depart from from the reception period that radio terminal 4 receives radio signals, make their non-intersect folding through making relay station 3 sends transmit time segments from radio signals to radio base station 2 and relay station 3.
Yet; In the present embodiment, the radio terminal 4 (comprising 4-2) that in the transmit time segments of radio base station 2, (is being in the reception period of the radio terminal (for example 4-1) under the control in the service area of radio base station 2) under the control that is in relay station 3-1 of relay station 3-1 sends radio signal.In Fig. 6; The reception period of radio terminal 4-1 in the service area of radio base station 2 (transmit time segments from radio base station 2 to radio terminal 4-1) is complementary to the period that is in radio terminal 4 (comprising 4-2) the transmission radio signal under its control with relay station 3-1, but does not always require this coupling (can not match).
In addition, in the embodiment of Fig. 5, relay station 3-1 sends radio signal to the radio terminal 4 (2) that is under its control, and this relay station receives radio signals from the radio terminal (2) that is under its control then.Yet under the situation of the embodiment of Fig. 6, relay station 3-1 sends radio signal to being in its control radio terminal 4 (2) down, and relay station 3-1 is to radio base station 2 transmission radio signals then.
Will be to RNG under the transmission of MMR is set in the situation after the transmission of T4-2, expectation changes sending order by from radio terminal 4-2 the reception to the RNG of T4-2 being connected on from relay station 3-1 to the mode after the transmission of the RNG of MMR.
In addition, in the present embodiment, in the reception period (to the reception period) of radio base station 2, carry out transmission (relay station 3-1 reception) from radio terminal 4-2 from the user data that is in the radio terminal 4-1 under the control.
That kind as described above through the RS transmit time segments being arranged in the BS transmit time segments and being arranged on BS and receiving in the period through RS being received the period, can improve the service efficiency of radio channel.
Control sending and receive adjusting regularly by the control unit 26,42 and 62 in each device.
Next, the transmission between radio base station 2-1, relay station 3-1 and radio terminal 4-2 is described and is received regularly with reference to being used for the transmission of Fig. 7 and receiving the details drawing that regularly describes.
In Fig. 7, D1 representes to represent time of delay of producing owing to the propagation time from radio base station 2-1 to relay station 3-1, D2 time of delay of producing owing to the propagation time from relay station 3-1 to radio terminal 4-2.
In addition; TTG representes to be used at radio base station 2 transmit status being switched to the switching time of accepting state; And RTG representes to be used for accepting state is switched to the switching time of transmit status; RSRTG representes to be used at relay station 3 accepting state to be switched to switching time of transmit status, and RSTTG representes to be used for transmit status is switched to the switching time of accepting state.In these switching times, need not carry out actual transmission and reception, because during these switching times, switch each other to sending with accepting state.
The receiving and processing device of relay station 3-1 by time of delay D1 receive from the transmission processing unit of radio base station 2-1 send leading.Relay station 3-1 is through being benchmark with leading, using the 36 couples of DL/UL MAP that send subsequently in MAP information analysis unit to analyze to receive MMR data (being the data to RS among the figure), receive regularly and receive channel to identify.
If do not need the switching time between transmit status and the accepting state especially, then the control unit 42 of relay station 3-1 can start leading transmission through after having passed through shift time, accepting state being switched to transmit status.When needing the switching time of switching between transmit status and the accepting state; The control unit 42 of relay station 3-1 is the scheduled time through deducting the time set that the RSRTG time obtains from shift time, and the timing before the beginning regularly of leading transmission is being begun accepting state is switched to transmit status.
At this,, can use timing control unit 20 to pass through the time of appointments such as MMR or the times preset separately to the control unit in the relay station 3 42 by radio base station 2 as shift time.
In addition; In the figure; The transmission processing unit of radio base station 2-1 does not send data after the transmission of carrying out to the MMR link, but can be in the T4-1 in left side radio terminal 4 (for example 4-1) transmission data to the service area that is positioned at radio base station 2-1 in the period.Yet in radio base station 2-1, completion before period of TTG period before the timing that the relay station 3-1 since the control that is in control unit 26 under begins to receive processing rises is handled in this transmission.
On the other hand; Begun to send leading relay station 3-1 and under the transmission control of control unit 42, sent DL/UL MAP and data (for example sending data (T4-2)), and begun before radio base station 2-1 sends, to finish this transmission next time to radio terminal 4-2 to the radio terminal 4 that is under its control.At this; In the time will sending partner's radio terminal 4 under the control that is in relay station 3-1 and switch to radio base station 2-1 and need switching time, 42 pairs of transmission processing unit of control unit are controlled in the time the same with this switching time, to accomplish the transmission to radio terminal 4 fast.
When must be to when measuring, in the receiving and processing device of radio terminal 4-2, carrying out this measurement to the transmission signal of the radio terminal 4 under the control that is in relay station 3-1 from the quality of reception (for example CINR (carrier wave and interference and noise ratio)) of the radio signal of relay station 3-1.The receiving and processing device of relay station 3-1 is to measuring to the quality of reception of leading, DL/UL MAP data that are in the radio terminal 4 (comprising radio terminal 4-2) under the control and transmission data.In addition; Although below do not mention especially; But for to the transmission among the radio base station 2-1 and receive handle employed radio channel and between relay station 3-1 and radio terminal 4-2 employed radio channel, can use different radio systems.This radio system can be included in and be used for method that pilot signal or subcarrier or PUSC (part of subchannel is used) or FUSC (whole uses of subchannel) etc. are distributed among the IEEE 802.16.
When having accomplished to distance measuring signal, CQI, to the transmission of radio base station 2 by the time of the data (to the data of BS) of MMR link; 42 pairs of transmission processing unit of the control unit of relay station 3 and receiving and processing device are controlled with the hand-off process of startup from the transmit status to the accepting state, and start after the period handling from the reception of distance measuring signal, CQI and the user data etc. that are in the radio terminal 4 (comprising radio terminal 4-2) under its control at RSTTG.
42 pairs of receiving and processing devices of the control unit of relay station 3-1 are controlled, and are leading to receive next of sending from radio base station 2-1 reception sources is switched to radio base station 2-1.
Be used for sending the required time of data that receives by relay station 3-1 of treating through the RSRTG period is added, can make weak pointization of shift time by radio base station 2.In addition, will begin to send leading radio frame (basic transmit frame) period that allows to send DL/UL MAP data and MMR data from radio base station 2-1 in this expectation is set at and is used for sending the required time of data of treating by relay station 3-1 reception by radio base station 2.
Do not using under the situation of the shortest shift time, setting shift time as follows yes enough: in the data sending processing that before the data sending processing next time of radio base station 2 begins, finishes from relay station 3-1 to radio terminal 4 from relay station 3-1.
Next, will describe the more suitably method that is used to set shift time with reference to Fig. 8 and Fig. 9.
As previous explanation, relay station 3-1 begins to send leading grade and send it to the radio terminal 4 that is under its control.When the data of radio terminal 4 being sent when accomplishing, relay station 3-1 switches to radio base station 2-1 and begins to send distance measuring signal, CQI and MMR link data etc. through sending the destination.
Therefore; The basic transmit frame of 3 couples of radio base station 2-1 of relay station be connected on continuously relay station 3-1 to the situation after the basic transmit frame of radio terminal 4 under; For relay station 3-1 is suitable, sends regularly because when switching the transmission destination, no longer need regulate.
Basic transmit frame defines and allows duration of sending, and therefore when the amount of transmission data is very little, can accomplish transmission in the shorter time than basic transmit frame.Yet, do not allow to proceed to surpass the transmission of basic transmit frame.
When regularly setting shift time with transmission from relay station 3-1 to radio base station 2-1 unconnectedly; As shown in Figure 8, can produce the radio frame gap between the basic transmit frame of radio base station 2-1 basic transmit frame and the arriving of relay station 3-1 of relay station 3-1 to radio terminal 4.
Yet; As shown in Figure 9; Through the basic transmit frame to radio base station 2-1 with relay station 3-1 is that benchmark is set deviant (promptly; Through setting deviant as follows: the basic transmit frame that the basic transmit frame to radio base station 2-1 of relay station 3-1 is coupled to continuously relay station 3-1), can realize level and smooth transmission to radio terminal 4-2.
More expectation is; To be directed against to the employed frequency of the transmission of radio terminal 4-2 (frequency band) and to use publicly, with elimination hand-off process to frequency (frequency band) under transmit status by relay station 3-1 to the employed frequency of the transmission of radio base station 2-1 (frequency band).For example, use first sub carrier group that belongs to certain frequency (frequency band) to send, use second sub carrier group that belongs to same frequency (frequency band) to send to radio base station 2-1 to radio terminal 4-2.
Therefore; In the case, relay station 3-1 can be a shift time with the time set that obtains through the period that deducts from the following period the basic transmit frame that is in its control radio terminal 4 (comprising 4-2) down: to from the reception of leading (from the front end region of the received frame of radio base station 2-1) of radio base station 2-1 transmission up to transmission to the distance measuring signal of radio base station 2-1 (to the front end region of the transmit frame of radio base station).
At this; Expectation will begin timing setting to the transmission of distance measuring signal from relay station 3-1 and begin regularly for the transmission that the result as the instruction of being sent by radio base station 2-1 (compensating signal that sends to relay station 3-1 through MMR) adjusts, with through the timing of radio frame and reception to the distance measuring signal that sends from relay station 3-1 are regularly compared the deviation of eliminating control unit 26 detected timings.
Next, will the transmission adjusting regularly to radio terminal 4 (4-2) to relay station 3-1 be described with reference to Figure 10 and Figure 11.
The control unit 42 of relay station 3-1 sends switching command to receiving and processing device having accomplished to from the reception of distance measuring signal and the data etc. that are in the radio terminal 4 under its control the time, to receive leading from radio base station 2-1 once more.
Therefore; Expectation relay station 3-1 from the basic received frame of radio terminal 4 be connected under the situation of not being interrupted relay station 3-1 after the basic received frame of radio base station 2-1, because relay station 3-1 no longer need regulate and receives timing when changing reception sources.
That is, when with the basic received frame of relay station 3-1 from radio base station 2 set unconnectedly relay station 3-1 from the basic received frame of radio terminal 4 (4-2) time, can in radio frame, produce the gap as illustrated in fig. 9.
Yet; Shown in figure 11, can come in relay station 3-1, to realize level and smooth reception through setting basic received frame as follows: the basic received frame from radio terminal 4 (4-2) of relay station 3-1 be connected under the situation of not being interrupted after the basic received frame from radio base station 2 of relay station 3.
More expectation is; Will be by relay station 3-1 to handle employed frequency (frequency band) from the reception of radio terminal 4 (4-2) and use publicly, with elimination hand-off process to frequency under accepting state to handling employed frequency (frequency band) from the reception of radio base station 2.For example, use first sub carrier group that belongs to certain frequency band to receive, use second sub carrier group that belongs to identical frequency band to receive from radio base station 2 from radio terminal 4 (4-2).
Therefore; In the case, relay station 3-1 can be with following timing setting for receiving beginning (from the front end region of the received frame of radio terminal) regularly to the distance measuring signal of radio terminal 4 (4-2): from beginning to receive from radio base station 2-1 leading (from the front end region of the received frame of radio base station 2-1) before from the timing of the length of the basic received frame of radio terminal 4 (4-2).
Expectation relay station 3-1 indicates radio terminal 4 (4-2) and (in control unit 42, generates and be used for the control signal that compensates regularly; Send this control signal through sending processing unit then), make that can make distance measuring signal receive beginning through the distance measuring signal that utilization receives from radio terminal 4 (4-2) regularly is complementary with above-mentioned timing.
At last, Figure 12 shows that message between radio base station 2 and the relay station 3 is sent and the embodiment of receiving sequence.
As shown in the drawing, relay station 3 at first receive from radio base station 2 send leading, to set up synchronously to the reception of DL/UL MAP data.The transmitting channel that uses these UL MAP data to allow is sending regularly to radio base station 2 transmission distance measuring signals.
Then, relay station 3 sends a signal, in this signal, RSRTG in the relay station 3 (handling the switching time of sending processing from reception) and RSTTG (handling the switching time that receives processing from transmission) information is appended to the basic capacity request signal.Control unit 42 can store these parameters (RSTTG, RSRTG) in the memory cell (not illustration) in advance, can also be when needed uses it for and sends through reading these parameters.
When receiving the basic capacity request signal; Radio base station 2 is confirmed communication function that relay station 3 is applied according to the terminal class information that in this basic capacity request signal, comprises in control unit 26, and should confirm that the result returned to relay station 3 as the basic capacity response signal.
Then, the control unit 42 of the control unit 26 of radio base station 2 and relay station 3 is carried out authentication through transmission and reception to PKM (private key management) message.When through this authentication processing relay station 3 being verified as permission reception service object, the transmission of the register requirement of the control unit 42 subtend radio base stations 2 of relay station 3 is controlled, and gets into network with request.
Yet this message comprises the deviant (time) of being added.
The control unit 20 of radio base station 2 checks through checking whether this shift time is suitable for the radio frame form at its station.When allowing this shift time, notify it.When not allowing this shift time, control unit 20 generates the shift time regulated through radio base station 2 as the register response signal, and the transmission of the signal of subtend relay station 3 is controlled.
Can also specify Offsets the time by radio base station 2.Promptly; Relay station 3 utilizes the time of basic capacity request notice expectation as the candidate offset time; Radio base station utilizes the basic capacity request that the shift time that is determined is notified to relay station 3 then, and the time that the shift time that is wherein determined is based on said expectation generates.
Therefore, the transmission of 42 pairs of transmission processing unit of control unit of relay station 3 regularly (to leading transmission regularly) is controlled, and begins to send radio signal to the radio terminal 4 that is under its control according to the shift time by radio base station 2 notices.
Can also specify Offsets the time to each relay station through the MMR link from radio base station 2, perhaps can set shift time to the control unit 42 of each relay station individually.
In addition, can also carry out transmission dividually with registration message to shift time.
According to above-mentioned execution mode, radio communication and the radio communication between relay station and the radio terminal between relay station and the radio base station are coordinated well.
In addition,, the utilization ratio of radio channel can be improved, and relay station can be more effectively used according to above-mentioned execution mode.
The japanese publication of submitting in Japan Patent office in the present invention and on August 17th, 2006 2006-222449 number is relevant and require its priority, by reference its content is incorporated into this.
Claims (14)
1. relay station, this relay station comprises:
Control unit; It is controlled sending processing unit and receiving and processing device; With do not allow from radio base station receive radio signals first receive period and radio terminal transmission radio signal to the control that is in said relay station under first transmit time segments overlap mutually
Wherein said first transmit time segments overlaps mutually with second transmit time segments that sends radio signal from the radio terminal of said radio base station under the control that is in said radio base station.
2. relay station according to claim 1; Wherein said control unit is controlled said transmission processing unit and said receiving and processing device, to be arranged on said first transmit time segments the 3rd transmit time segments to said radio base station transmission radio signal afterwards.
3. relay station according to claim 1 wherein receives the radio signal that receives in the period and in the radio signal that said first transmit time segments sends, comprises targeting signal said first.
4. relay station, this relay station comprises:
Control unit, it is controlled receiving and processing device and transmission processing unit, overlaps mutually with the first reception period that receives radio signals from radio terminal with first transmit time segments that does not allow to send radio signal to radio base station,
Wherein said first receives period and said radio base station overlapped mutually from the second reception period that the radio terminal under the control that is in said radio base station receives radio signals.
5. relay station according to claim 4; Wherein said control unit is controlled said transmission processing unit and said receiving and processing device, receives and the 3rd to receive the period from what said radio base station received radio signals after the period to be arranged on said first.
6. radio communications system, this radio communications system comprises:
Radio base station with control unit, this control unit transmit time segments that sends radio signal and the reception period that receives radio signals are controlled and
Relay station with control unit; This control unit is controlled; Transmission with the targeting signal of the control radio terminal transmission down through being in this relay station based on shift time and the targeting signal subtend of in said transmit time segments, sending from said radio base station is regularly controlled; With the control that is in this relay station under period of communicating by letter of radio terminal in do not carry out handle with the corresponding reception of said transmit time segments and with the corresponding transmission processing of said receptions period
Wherein, Send first transmit time segments of radio signal overlaps mutually with second transmit time segments that sends radio signal from the radio terminal of said radio base station under the control that is in said radio base station to the radio terminal under the control that is in said relay station; And wherein, first receive period and said radio base station and overlap mutually from the second reception period that the radio terminal under the control that is in said radio base station receives radio signals from what radio terminal received radio signals.
7. radio communications system according to claim 6 wherein sends said shift time from said radio base station to said relay station.
8. one kind is carried out method of operating to relay station, and this method may further comprise the steps:
Control with receiving and processing device sending processing unit, with do not allow from radio base station receive radio signals first receive period and radio terminal transmission radio signal under the control that is in said relay station first transmit time segments overlap mutually,
Wherein said first transmit time segments overlaps mutually with second transmit time segments that sends radio signal from the radio terminal of said radio base station under the control that is in said radio base station.
9. method according to claim 8, this method is further comprising the steps of:
Said transmission processing unit and said receiving and processing device are controlled, to be arranged on said first transmit time segments the 3rd transmit time segments that is used for sending radio signal afterwards to said radio base station.
10. method according to claim 8, this method is further comprising the steps of:
One targeting signal is included in said first receives the radio signal that receives in the period and in the radio signal that said first transmit time segments sends.
11. one kind is used for relay station is carried out method of operating, this method may further comprise the steps:
Receiving and processing device and transmission processing unit are controlled, are overlapped mutually with the first reception period that receives radio signals from radio terminal with first transmit time segments that does not allow to send radio signal to radio base station,
Wherein said first receives period and said radio base station overlapped mutually from the second reception period that the radio terminal under the control that is in said radio base station receives radio signals.
12. method according to claim 11, this method is further comprising the steps of:
Said transmission processing unit and said receiving and processing device are controlled, received and the 3rd to receive the period from what said radio base station received radio signals after the period to be arranged on said first.
13. a radio communication method, this radio communication method may further comprise the steps:
At the radio base station place, to transmit time segments that sends radio signal and the reception period that receives radio signals control and
The place controls at relay station; Transmission with the targeting signal of the control radio terminal transmission down through being in this relay station based on shift time and the targeting signal subtend of in said transmit time segments, sending from said radio base station is regularly controlled; With the control that is in this relay station under period of communicating by letter of radio terminal in do not carry out handle with the corresponding reception of said transmit time segments and with the corresponding transmission processing of said receptions period
Wherein, Send first transmit time segments of radio signal overlaps mutually with second transmit time segments that sends radio signal from the radio terminal of said radio base station under the control that is in said radio base station to the radio terminal under the control that is in said relay station; And wherein, first receive period and said radio base station and overlap mutually from the second reception period that the radio terminal under the control that is in said radio base station receives radio signals from what radio terminal received radio signals.
14. method according to claim 13 is wherein sent said shift time from said radio base station to said relay station.
Applications Claiming Priority (3)
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|---|---|---|---|
| JP2006222449A JP4952136B2 (en) | 2006-08-17 | 2006-08-17 | Relay station, radio base station, and communication method |
| JP2006222449 | 2006-08-17 | ||
| JP2006-222449 | 2006-08-17 |
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| CN2011103865616A Division CN102377472A (en) | 2006-08-17 | 2007-07-06 | Relay station, radio base station and communication method |
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| CN101127554A CN101127554A (en) | 2008-02-20 |
| CN101127554B true CN101127554B (en) | 2012-01-25 |
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| CN2011103865616A Pending CN102377472A (en) | 2006-08-17 | 2007-07-06 | Relay station, radio base station and communication method |
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| CN2011103865616A Pending CN102377472A (en) | 2006-08-17 | 2007-07-06 | Relay station, radio base station and communication method |
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| US (1) | US8620212B2 (en) |
| EP (1) | EP1890509B1 (en) |
| JP (1) | JP4952136B2 (en) |
| KR (1) | KR100911293B1 (en) |
| CN (2) | CN101127554B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080045145A1 (en) * | 2006-08-17 | 2008-02-21 | Fujitsu Limited | Radio Relay Communication Method, Radio Base Station, and Radio Relay Station in Radio Communication System |
| JP4825108B2 (en) * | 2006-10-25 | 2011-11-30 | 富士通株式会社 | Radio relay communication method and radio base station in radio communication system |
| CN101155410A (en) * | 2006-09-30 | 2008-04-02 | 西门子公司 | Method and device for implementing information processing based on channel in relay reinforced subdistrict |
| JP4628411B2 (en) * | 2006-10-20 | 2011-02-09 | 三星電子株式会社 | Apparatus and method for supporting relay service in wireless communication system using multi-hop relay system |
| KR101109254B1 (en) * | 2007-07-05 | 2012-01-30 | 삼성전자주식회사 | Data transmission system for asynchronous trasmitting data and map information |
| US8867983B2 (en) * | 2007-09-19 | 2014-10-21 | Fujitsu Semiconductor Limited | Method and apparatus for controlling a relay station in a multi-hop relay network |
| JP5328760B2 (en) * | 2008-02-27 | 2013-10-30 | パナソニック株式会社 | Relay station, mobile station, and relay transmission method in mobile communication system |
| JP5355909B2 (en) * | 2008-03-05 | 2013-11-27 | 住友電気工業株式会社 | Base station equipment |
| CN101616408B (en) * | 2008-06-23 | 2012-04-18 | 华为技术有限公司 | Key derivation method, key derivation device and system |
| US8498258B2 (en) * | 2008-07-01 | 2013-07-30 | Nokia Siemens Networks Oy | Preamble offset for femto base stations |
| US9078270B2 (en) * | 2008-07-03 | 2015-07-07 | Qualcomm Incorporated | Opportunistic relay scheduling in wireless communications |
| JP4660609B2 (en) * | 2009-06-22 | 2011-03-30 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication method, radio base station, and relay node |
| JP5513022B2 (en) * | 2009-06-22 | 2014-06-04 | 株式会社Ｎｔｔドコモ | Mobile communication method, radio base station, and relay node |
| CN102201856B (en) * | 2010-03-22 | 2016-05-25 | 上海无线通信研究中心 | The uplink downlink frame synchronization communication means of the communication system that comprises relay station |
| CN102300308A (en) * | 2010-06-25 | 2011-12-28 | 中兴通讯股份有限公司 | Relay station downlink transmission method and system |
| US8744340B2 (en) * | 2010-09-13 | 2014-06-03 | Qualcomm Incorporated | Method and apparatus of obtaining timing in a repeater |
| US8948157B2 (en) * | 2011-09-07 | 2015-02-03 | Qualcomm Incorporated | Method and apparatus for distributed synchronization in femtocell networks |
| CN102497315B (en) * | 2011-12-09 | 2014-10-29 | 西安电子科技大学 | Deep space file transmission method based on multipath |
| CN103001741B (en) * | 2013-01-08 | 2015-06-10 | 北京理工大学 | Multi-path based deep space file seepage transmission method |
| EP2991441A3 (en) | 2014-08-27 | 2016-04-06 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | A transceiver, a sudac, a method for signal processing in a transceiver, and methods for signal processing in a sudac |
| US20160219578A1 (en) * | 2015-01-28 | 2016-07-28 | Electronics And Telecommunications Research Institute | Cooperative multi-antenna transmitting and receiving method and apparatus for mobile communication system, and method for configuring cluster for the same |
| JP6644660B2 (en) * | 2016-09-28 | 2020-02-12 | ソフトバンク株式会社 | Base station device, base station, mobile unit, management device, and communication system |
| CN110557184B (en) * | 2018-05-31 | 2021-11-16 | 阿里巴巴集团控股有限公司 | Communication method and device based on relay equipment and communication method and device between terminal and base station |
| US11310024B2 (en) | 2019-06-30 | 2022-04-19 | Mixcomm, Inc. | Repeater methods and apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252650A (en) * | 1998-10-23 | 2000-05-10 | 富士通株式会社 | Radio relay system using time division multiple access-time duplex transmission mode |
| CN1551532A (en) * | 2003-05-20 | 2004-12-01 | 松下电工株式会社 | Wireless relay device and wireless relay method |
| US20060046643A1 (en) * | 2004-09-01 | 2006-03-02 | Kddi Corporation | Wireless communication system, relay station device and base station device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05259956A (en) * | 1992-03-11 | 1993-10-08 | Nec Corp | Radio repeater |
| SE9402028L (en) | 1994-06-10 | 1995-08-07 | Telia Ab | Device for repeaters in radio systems with short range |
| SE513975C2 (en) | 1994-08-19 | 2000-12-04 | Telia Ab | Repeater and method for DECT systems |
| TW357501B (en) | 1996-09-30 | 1999-05-01 | Siemens Ag | Method to increase the effective range in a time-division-method |
| JP3596452B2 (en) * | 2000-09-28 | 2004-12-02 | 日本電信電話株式会社 | Wireless repeater |
| JP3967084B2 (en) * | 2001-02-26 | 2007-08-29 | 株式会社日立国際電気 | TDMA relay system |
| GB0200237D0 (en) * | 2002-01-07 | 2002-02-20 | Imec Inter Uni Micro Electr | Wireless cellular network architecture |
| US7031658B2 (en) | 2003-03-07 | 2006-04-18 | Harris Corporation | System and method for single radio retransmission using a half duplex radio |
| JP2005026816A (en) * | 2003-06-30 | 2005-01-27 | Mitsubishi Electric Corp | Radio system |
| US7990905B2 (en) | 2003-12-30 | 2011-08-02 | Nokia Corporation | Communication system using relay base stations with asymmetric data links |
| KR100891295B1 (en) * | 2005-09-28 | 2009-04-06 | 삼성전자주식회사 | Apparatus and method for advertising the features of relay station in a multi-hop relay broadband wireless access communication system |
| KR100866334B1 (en) | 2005-09-29 | 2008-10-31 | 삼성전자주식회사 | Apparatus and method for supporting multi link in multi-hop relay cellular network |
| KR20070045743A (en) * | 2005-10-28 | 2007-05-02 | 삼성전자주식회사 | Method for transmitting/receiving data in multi-hop wireless mobile communication system |
| KR20070073138A (en) * | 2006-01-03 | 2007-07-10 | 삼성전자주식회사 | Apparatus and method for transparent relay in multi-hop relay broadband wireless access communication systems |
-
2006
- 2006-08-17 JP JP2006222449A patent/JP4952136B2/en not_active Expired - Fee Related
-
2007
- 2007-06-06 US US11/808,061 patent/US8620212B2/en not_active Expired - Fee Related
- 2007-06-07 EP EP07109825.5A patent/EP1890509B1/en not_active Expired - Fee Related
- 2007-06-28 KR KR1020070064430A patent/KR100911293B1/en active IP Right Grant
- 2007-07-06 CN CN2007101281464A patent/CN101127554B/en not_active Expired - Fee Related
- 2007-07-06 CN CN2011103865616A patent/CN102377472A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1252650A (en) * | 1998-10-23 | 2000-05-10 | 富士通株式会社 | Radio relay system using time division multiple access-time duplex transmission mode |
| CN1551532A (en) * | 2003-05-20 | 2004-12-01 | 松下电工株式会社 | Wireless relay device and wireless relay method |
| US20060046643A1 (en) * | 2004-09-01 | 2006-03-02 | Kddi Corporation | Wireless communication system, relay station device and base station device |
Non-Patent Citations (1)
| Title |
|---|
| Fang-Ching Ren，ET AL.Recommendation on PMP Mode Compatible TDD Frame Structure.《IEEE 802.16 Presentation Submission Template (Rev. 8.3)》.2005,7-9、12. * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1890509A2 (en) | 2008-02-20 |
| CN101127554A (en) | 2008-02-20 |
| US20080045148A1 (en) | 2008-02-21 |
| KR20080016447A (en) | 2008-02-21 |
| EP1890509A3 (en) | 2012-05-30 |
| KR100911293B1 (en) | 2009-08-11 |
| EP1890509B1 (en) | 2016-01-06 |
| CN102377472A (en) | 2012-03-14 |
| JP2008048203A (en) | 2008-02-28 |
| JP4952136B2 (en) | 2012-06-13 |
| US8620212B2 (en) | 2013-12-31 |
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